Known as the PORCELANOSA ceramic stone, STON-KER® is a remarkably resistant material with a surface that is unaffected by even the most extreme conditions. With STON-KER®, PORCELANOSA Group has evolved the ceramic production system to obtain a product that has a coloured design and is remarkably resistant, even exceeding the properties of porcelain tiles. It created this new material in response to the most demanding architectural requirements.